超级电容器用原纤化天丝隔膜的制备及性能研究

LIU Ning,LI Yaxin,LONG Jin,LIANG Yun,HU Jian

2022,(6):1-7.DOI:10.11980/j.issn.0254-508X.2022.06.001

通过对天丝短切纤维进行打浆处理，获得了具有不同原纤化程度的天丝纤维，并结合湿法成形技术制备得到原纤化天丝隔膜。探究了纤维几何尺寸和形貌对隔膜孔隙结构的影响，对不同孔隙结构隔膜制备的超级电容器电化学性能进行了分析。结果表明，天丝纤维经过不同打浆转数处理后，纤维尺寸和隔膜孔隙结构发生了明显变化。随着打浆转数的增加（20000~250000转），粗纤维比例显著降低，质均纤维长度从2.29 mm降至0.76 mm。孔隙率从81.2%降至66.3%，隔膜平均孔径从1.20 μm降至0.27 μm，隔膜厚度从47.7 μm降至26.0 μm，但不同原纤化天丝隔膜制备的超级电容器的阻抗、比容量、能量密度和功率密度变化并不明显。

[摘要] [PDF]

半纤维素基复合保鲜膜的制备及其性能研究

LIU Gengmei,ZHANG Chen,NI Yonghao,CHEN Lihui,HUANG Liulian,MIAO Qingxian

2022,(6):8-12.DOI:10.11980/j.issn.0254-508X.2022.06.002

本研究以聚木糖（Xylan）和聚乙烯醇（PVA）为主要原料，茶多酚（TP）为抑菌剂制备复合保鲜膜，并将其用于圣女果的贮藏保鲜，主要考察了TP添加对复合保鲜膜强度、阻隔和抑菌性能以及圣女果保鲜效果的影响。结果表明，以聚木糖和PVA总质量为基准，相比未添加TP的对照样，当TP含量为5.26%时，复合保鲜膜的拉伸强度和断裂伸长率分别提高116.6%和113.5%，净水蒸气转移率下降43.1%。用此工艺条件下制备的复合保鲜膜成膜液涂覆在圣女果表面，在温度23℃、相对湿度67%环境下贮藏15天后，与对照样相比，圣女果的质量率下降27.8%，硬度提高13.8%，可滴定酸和维生素C含量分别提高70.6%和62.0%；对大肠杆菌和金黄色葡萄球菌的抑菌圈显著增大，分别增加了2.23 mm和3.5 mm。

[摘要] [PDF]

纳米纤维素碳气凝胶制备及其电催化性能研究

CHEN Yongkang,PENG Xinwen

2022,(6):13-20.DOI:10.11980/j.issn.0254-508X.2022.06.003

本研究以纤维素纳米纤丝（CNF）为碳骨架，氮含量高的类石墨相氮化碳（g-C3N4）为氮源和造孔剂，成功制备了一种具有分级多孔结构的氮掺杂碳气凝胶（NCA）电催化剂。研究了NCA的物理化学结构与氧还原反应（ORR）活性之间的关系，以及其锌-空气电池性能。该NCA催化剂表现出较高的比表面积（381.77 m²/g）、分级多孔结构，氮掺杂含量3.27%。ORR测试结果表明，NCA具有优异的ORR催化活性，半波电位可达0.83 V，接近商业铂碳（Pt/C）电催化剂。进一步将NCA作为阴极催化剂用于组装水系锌-空气电池，在电流密度为10 mA/cm2下可以实现长达110 h的循环充放电，具有良好的电池使用性能。

[摘要] [PDF]

纳米纤维素-蒙脱土块状材料的制备及性能分析

ZHU Zirui,WANG Wenbo,LIU Zhongming,KONG Fangong,WANG Shoujuan

2022,(6):21-27.DOI:10.11980/j.issn.0254-508X.2022.06.004

以自制的纤维素纳米晶体（CNC）为主要原料，通过与一定比例的蒙脱土（MMT）和水共混、搅拌、热压制备出了具有一定机械强度的纳米纤维素基块状材料。通过透射电子显微镜（TEM）、扫描电子显微镜（SEM）、原子力显微镜（AFM）及丁达尔效应证明了制备的CNC具有良好的再分散性能。以MMT作为增强剂按照不同的比例添加到CNC中制备得到纳米纤维素-蒙脱土（CNC-MMT）块状材料，采用抗弯曲测试、SEM、接触角测试、吸水性测试和热重（TG）分析考察了CNC-MMT块状材料的弯曲性能、表面形态、亲水性能及热稳定性能。研究表明，当MMT的添加量为30%时，CNC-MMT块状材料的弯曲强度最高为74 MPa，其强度高于普通的商业塑料，且CNC-MMT块状材料具有较低的亲水性能及较好的热稳定性能。

[摘要] [PDF]

绝缘竹浆制备过程中酸处理除铁离子规律研究

LI Shengshi,LIU Mengru,QIN Xiao,ZHANG Zhanbo,LI Hailong

2022,(6):28-34.DOI:10.11980/j.issn.0254-508X.2022.06.005

探讨了竹浆制备过程中，硫酸和柠檬酸处理对铁离子去除的影响，揭示了铁离子的去除规律，建立了相应的预测模型，并对高纯度绝缘竹浆的性能进行分析。结果表明，采用硫酸和柠檬酸处理竹浆，铁离子的去除历程大致可分为快速去除、充分去除和残余去除3个阶段。当酸用量1%、处理时间60 min、处理温度70℃时，铁离子的去除效果较佳。与硫酸处理相比，柠檬酸处理所得纸浆纤维损伤小，聚合度无明显变化，纸张的物理强度较优。经硫酸和柠檬酸处理后的竹浆均可满足高纯度绝缘浆的质量要求。

[摘要] [PDF]

TEMPO氧化细菌纤维素基纳米复合凝胶的结构及光催化性能研究

QIAN Xin,XU Yongjian

2022,(6):35-42.DOI:10.11980/j.issn.0254-508X.2022.06.006

通过微波辅助溶剂热原位合成反应，制备了纳米硫化镉（CdS）颗粒负载量更高且光催化吸附降解性能更优的氧化细菌纤维素@纳米硫化镉（TOBC@CdS）复合凝胶材料。结果表明，在羧基的络合作用下，立方晶型纳米CdS团簇以类细胞感受器的形貌吸附在TOBC纤维非结晶区域，形成了较为稳定的有机无机杂化结构。可见光照射180 min后，TOBC@CdS纳米复合凝胶可有效光催化降解87.27%的亚甲基蓝（MB）；实验重复5次后，其光催化降解性能没有明显衰减。

[摘要] [PDF]

硫酸盐竹浆与木浆的打浆特性和纸张性能对比研究

ZHU Zongwei,LI Bingyun,LI Hailong

2022,(6):43-50.DOI:10.11980/j.issn.0254-508X.2022.06.007

以硫酸盐竹浆为研究对象，筛分后测定了竹浆各级分纤维的含量，研究了筛除细小纤维组分前后竹浆的打浆特性和纸张性能，并与漂白硫酸盐针叶木浆和漂白硫酸盐阔叶木浆（以下简称木浆）进行对比。研究发现，竹浆中长纤维级分和细小纤维组分含量较高，R16和P200级分纤维的含量分别为50.8%和25.1%；在PFI打浆过程中，相同打浆转数下，竹浆纤维相比木浆纤维更容易被切断和产生扭结现象。竹浆中细小组分有利于纸浆游离度的降低和纸浆保水值的提高，降低打浆能耗；在相同的游离度下，竹浆原浆和筛除细小纤维组分后的竹浆纸张的抗张指数、撕裂指数均大于木浆，竹浆原浆纸张的耐破指数和筛除细小纤维组分后的竹浆纸张的耐折度大于木浆的。

[摘要] [PDF]

水彩画纸吸收性评价方法的建立

SHI Liming,LI Zheng,WAN Ying,DU Qi,LIU Wen,YANG Yang,MAO Zongjiu

2022,(6):51-56.DOI:10.11980/j.issn.0254-508X.2022.06.008

本研究采用7种不同的吸收性检测方法对6种吸收性不同的水彩画纸样品进行了检测分析，制定了一套适用于全面判定水彩画纸吸收性的检测方法。结果表明，墨水划线法、液体渗透法、表面吸收度法和赫克力士施胶度法均不适宜测试水彩画纸的吸收性；水彩画纸的吸收性可通过Cobb法、接触角法和动态渗透法综合评定，当纸张Cobb（60）值在（20±4） g/m2范围内时，接触角在30 min之内变化应较小，1200 s动态渗透曲线所表示的渗透速率应较快。

[摘要] [PDF]

雪茄风味卷烟纸在卷烟中的感官作用研究

XIANG Pan,HU Shaodong,LI Chenggang,HE Baojiang,LI Hongtao,JI Lingbo,QU Zhan,FU Yufeng,XU Xiujuan

2022,(6):57-63.DOI:10.11980/j.issn.0254-508X.2022.06.009

选取3种雪茄风味香精（1#、2#和3#）分别制备加香卷烟纸，并应用于雪茄型卷烟进行感官评价。结果表明，与空白卷烟相比，3#香精制备的卷烟纸能够丰富雪茄型卷烟嗅香，显著提升抽吸感官品质，增强雪茄风格。利用溶剂萃取结合气相色谱-质谱（GC-MS）分析3#香精制备的加香卷烟纸中的挥发性成分。结果表明，溶剂萃取最佳条件为：水为溶剂，提取温度40℃，提取时间2 h。此外，GC-MS共鉴定出50种挥发性成分，其中烟碱（114.61 μg/g）、乙基香兰素（82.7 μg/g）、香兰素（73.78 μg/g）、苯甲醇（52.69 μg/g）、乙基麦芽酚（48.44 μg/g）、6-甲基香豆素（26.38 μg/g）等化合物的含量较高。

[摘要] [PDF]

桉木化机浆制浆废水多组分成分分析

HUANG Zaiheng,QIN Xiang,LIU Xi,ZHU Tian,NONG Guangzai,YANG Qifeng

2022,(6):64-70.DOI:10.11980/j.issn.0254-508X.2022.06.010

通过气相色谱/质谱联用仪（GC/MS）、高效液相色谱/质谱联用仪（HPLC/MS）等方法系统测定了桉木化机浆制浆废水成分，并进行了定性和定量分析。结果表明，桉木化机浆制浆废水中含有大量木质素、半纤维素、有机物、糖类等，其中木质素含量较高，为73 g/L，是杨木化机浆制浆废水的1.2倍；有机污染物40多种；桉木化机浆制浆废水中还检测出多种糖类，是后续厌氧处理的基本条件。

[摘要] [PDF]

绿液高效澄清器系统自动化控制

YOU Bingjun,YAO Xiuqi,MENG Lingqi,LI Jinpeng,CHEN Anjiang

2022,(6):71-74.DOI:10.11980/j.issn.0254-508X.2022.06.011

介绍了绿液高效澄清器的工作原理、工艺及设备组成，重点描述了其控制要点及安全连锁条件、控制回路设置。经实际运行该控制系统完全自动化，运行稳定、可靠。

[摘要] [PDF]

靴压液压系统的关键要素设计及分析

LI Ruobing,JIA Xiaolong,CHENG Min,WEI Ailing,ZONG Weiya

2022,(6):75-79.DOI:10.11980/j.issn.0254-508X.2022.06.012

针对靴压液压系统的关键要素靴压高线压工艺要求、靴压对辊的静压支承、靴板及轴承润滑、靴套张紧、油箱等进行了详细设计及分析。采用虹吸管隔离靴辊内部回油管和主回油管，可以保持靴套张紧膨胀，提高靴套寿命，满足靴压的工艺要求，并解决液压油中溶解过量饱和空气的问题。

[摘要] [PDF]

纸浆模塑行业发展现状及趋势（二）

2022,(6):80-88.DOI:10.11980/j.issn.0254-508X.2022.06.013

本文介绍了纸浆模塑行业的发展历程、主要产品分类，汇总了国内外限塑/禁塑政策，重点分析了中国及国外纸浆模塑行业发展现状及趋势、国内外主要生产企业情况及科技创新发展情况，并提出纸浆模塑行业发展建议。

[摘要] [PDF]

影响生活用纸吸收性能的因素

ZHANG Zhipeng,DONG Kuibin,LI Chenxi,AN Xingye,CAO Haibing,LU Bin,LIU Hongbin

2022,(6):89-94.DOI:10.11980/j.issn.0254-508X.2022.06.014

介绍了生活用纸吸收性能的重要性，并从纤维、打浆、起皱、干燥、压花和结构6个因素阐述了对生活用纸吸收性能的影响。

[摘要] [PDF]

基于纤维素纳米晶体的比色传感器研究进展

LIN Tao,WANG Le,WEI Xiaoyao,DU Hengli,YIN Xuefeng

2022,(6):95-102.DOI:10.11980/j.issn.0254-508X.2022.06.015

基于纤维素纳米晶体（CNC）的比色传感器可以通过色度感知外部环境的变化，其手性结构和溶胀行为的组合，能迅速响应各种外部环境的刺激。本文主要综述了基于CNC的比色传感器在湿度、压力、气体和有机溶剂外部刺激下颜色的变化情况，并对其未来的发展前景和制备关键点进行了总结。

[摘要] [PDF]

废纸回用废水中胶黏物去除技术研究进展

ZHANG Jiaming,ZHOU Chenxu,XIONG Jianhua,ZHU Hongxiang,WANG Shuangfei,HUANG Xiannan

2022,(6):103-112.DOI:10.11980/j.issn.0254-508X.2022.06.016

废纸回用制浆造纸过程中胶黏物是影响再生纸质量及纸机正常运行的重要因素之一。本文介绍了废纸回用中胶黏物的来源、检测方法及去除手段的相关研究进展，重点阐述了其在物理、化学、高级氧化、生物及组合技术方面的去除手段应用研究进展，并就胶黏物去除技术在废纸回用废水处理领域应用时存在的主要问题和未来发展方向进行了讨论。

[摘要] [PDF]

木片筛余物高得率半化学法清洁制浆技术研究

ZHANG Wei,XU Jun,YING Guangdong,CAO Yanjun,CHEN Kefu,ZANG Zijia

2022,(6):113-118.DOI:10.11980/j.issn.0254-508X.2022.06.017

以太阳纸业备料车间木片筛选碎料（筛余物）为原料，对其烧碱法半化学制浆的实验室工艺和生产试验进行了研究。结果表明，筛余物采用半化学法制浆可获得较高得率和环压强度的纸浆，且用碱量对纸浆性能有显著影响。相对8%NaOH（相对于绝干原料）化学预处理，采用14%NaOH化学预处理结合两段浆浓22%的高浓磨浆工艺，所制半化学浆抄造浆张的裂断长和环压指数分别达2.89 km和9.76 N·m/g，是前者的1.9倍和1.2倍，而且优于现用国内OCC废纸浆抄造浆张；生产试验得到的浆张性能指标与实验室相吻合，其中紧度和环压强度分别达到GB/T 13023—2008瓦楞芯（原）纸AA级和A级优等品要求。

[摘要] [PDF]

制浆造纸专业英语产教研融合教学改革与实践

CHEN Gegu,YAO Chunli,LI Mingfei,PENG Feng

2022,(6):119-123.DOI:10.11980/j.issn.0254-508X.2022.06.018

本文提出了“制浆造纸专业英语”产教研融合的教学模式，分析了当前制浆造纸专业英语教学存在的问题，采用CBI理念及任务教学法将教学、科研及企业问题有效结合，从产教研融合视角对教学内容、教学模式、师资提出多项措施并进行实践，构筑特色“专业英语基础版块+综合实践版块”丰富课堂内容，显著提升了学生专业英语语言能力及创新能力，实现师生教学相长的教学效果，为制浆造纸专业英语教学提供新思路和依据。

[摘要] [PDF]

Study on Preparation and Properties of Fibrillated Tencel Separator for Supercapacitor

LIU Ning,LI Yaxin,LONG Jin,LIANG Yun,HU Jian

2022,(6):1-7.DOI:10.11980/j.issn.0254-508X.2022.06.001

Tencel fibers with different degree of original fibrosis were obtained through short-cut Tencel fibers via grinding， and used to prepare fibrillated tencel separator by wet-forming process. The effect of fiber geometry size and morphology on the pore structure of separators was further investigated. Eventually， the electrochemical performance of supercapacitors prepared from separators with different pore structure was studied. The results showed that the fiber size and the pore structure of the separator changed significantly after the tencel fibers were treated with different grinding revolutions. With the increase of the grinding revolutions （20000~250000 r）， the proportion of coarse fibers decreased obviously and the average fiber length decreased from 2.29 mm to 0.76 mm. Consequently， the porosity of the separator decreased from 81.2% to 66.3%，the average pore size of the separator reduced from 1.20 μm to 0.27 μm，and the thickness of separator decreased from 47.7 μm to 26.0 μm. Whereas the change of the impedance， specific capacity， energy and power density of supercapacitors prepared from different fibrillated tencel separator was not significant.

[Abstract] [PDF]

Investigation on Preparation and Properties of Hemicellulose-based Composite Cling-film

LIU Gengmei,ZHANG Chen,NI Yonghao,CHEN Lihui,HUANG Liulian,MIAO Qingxian

2022,(6):8-12.DOI:10.11980/j.issn.0254-508X.2022.06.002

In this study， the xylan and the polyvinyl alcohol（PVA）were used as the main raw materials， and the tea polyphenols（TP）was used as antibacterial agents to prepare composite cling-film. The film was utilized for the storage and fresh preservation of cherry tomato. The effects of the addition of TP on the strength， barrier and antibacterial performance of composite film as well as fresh preservation effect towards cherry tomato were investigated. The results showed that，compared with the film without TP added， the tensile strength and elongation at break increased by 116.6% and 113.5%， respectively， the net water vapor transfer rate decreased by 43.1% when the dosage of TP was 5.56% （compared with the total weight of xylan and PVA）. The film-forming solution prepared under this process condition was coated on the surface of cherry tomato， and the fruit was then stored under the conditions of 23℃ and relative humidity 67% for 15 days. Compared with the control sample， the weight loss rate of cherry tomato decreased by 27.8%， the hardness increased by 13.8%， and the contents of titratable acid and vitamin C increased by 70.6% and 62.0%， respectively. The inhibition zone against Escherichia coli and Staphylococcus aureus increased significantly 2.23， 3.5 mm， respectively.

[Abstract] [PDF]

Preparation and Performance Research of Cellulose Nanofibril-based Carbon Aerogel Electrocatalysts

CHEN Yongkang,PENG Xinwen

2022,(6):13-20.DOI:10.11980/j.issn.0254-508X.2022.06.003

In this study， nitrogen doped carbon aerogel （NCA） electrocatalyst with hierarchical pore structure was successfully prepared by using cellulose nanofibril（CNF） as carbon framework and g-C3N4 with high nitrogen compound as nitrogen source and pore-forming agent.The physicochemical structure， oxygen reduction reaction （ORR） activity of NCA were investigated， and properties of zinc-air battery based on NCA were also studied.NCA revealed hierarchical pore structure with high specific surface area of 381.77 m²/g， and successful nitrogen doping with nitrogen doping content of 3.27%. NCA displayed excellent ORR performances with high half-wave potential of 0.83 V， which was close to that of commercial platinum-based electrocatalyst.The zinc-air battery in water phase using the NCA as a cathode material exhibited long-term stability for more than 110 h at a current density of 10 mA/cm2， showing a good battery serviceability.

[Abstract] [PDF]

Preparation and Performance Analysis of Nanocellulose-Montmorillonite Block Material

ZHU Zirui,WANG Wenbo,LIU Zhongming,KONG Fangong,WANG Shoujuan

2022,(6):21-27.DOI:10.11980/j.issn.0254-508X.2022.06.004

The cellulose nanocrystal （CNC） with good redispersion properties were prepared and utilized as the main raw materials， blended with a certain mass of montmorillonite （MMT） and water followed by hot-pressed to prepare the nanocellulose-based bulk materials with high mechanical strength. The tests of transmissionelectron microscope （TEM），scanning electron microscope （SEM）， atomic force microscope （AFM） and Tyndall effect have proved the prepared CNC with the excellent re-dispersibility. Montmorillonite （MMT）， as a reinforcing agent，was added with CNC powder in different proportions to prepare CNC-MMT composite block materials. Bending resistance test， SEM， contact angle test， water absorption test and thermogravimetric （TG） analysis were used to investigate the bending performance， surface morphology， hydrophilicity and thermal stability of composite materials separately. The results showed that when the content of montmorillonite reached 30%， the bending strength of CNC-MMT was up to 74 MPa， which was higher than that of ordinary commercial plastics.Moreover， CNC-MMT had lower hydrophilic properties and better thermal stability.

[Abstract] [PDF]

Removal Rule of Iron Ions by Acid Treatment during the Preparation of Insulating Bamboo Pulp

LI Shengshi,LIU Mengru,QIN Xiao,ZHANG Zhanbo,LI Hailong

2022,(6):28-34.DOI:10.11980/j.issn.0254-508X.2022.06.005

The effects of sulfuric acid and citric acid treatment on the removal of iron ions during the preparation of bamboo pulp were discussed. The rules of iron ion removal were revealed and the corresponding predicting model was established. The properties of high-purity insulating bamboo pulp were also discussed. The results showed that the removal process of iron ions could be roughly divided into three stages： rapid removal， sufficient removal and residual removal. The optimum treatment conditions were obtained that the dosage of acid was 1% at the processing temperature of 70°C with the processing time of 60 mins. Compared with the sulfuric acid treatment， the pulp fibers obtained by citric acid treatment were less damaged， and the degree of polymerization had no obvious change with a better mechanical strength. The bamboo pulp treated with sulfuric acid or citric acid could both meet the quality requirements of high-purity insulating pulp.

[Abstract] [PDF]

Study on Structure and Photocatalytic Performance of TEMPO-oxidized Bacterial Cellulose-based Nanocomposite Gel

QIAN Xin,XU Yongjian

2022,(6):35-42.DOI:10.11980/j.issn.0254-508X.2022.06.006

The oxidized bacterial cellulose@cadmium sulfide （TOBC@CdS） nanocomposite gel with high CdS loading percentage and better photocatalytic degradation performance were obtained through the microwave assisted solvo-thermal in-situ synthesis reaction. The results showed that cell receptor-like cubic CdS nanoclusters were mainly attached to amorphous region of TOBC fiber via complexation of carboxyl group， forming stable organic-inorganic hybrid structure. TOBC@CdS nanocomposite gel possessed efficient photocatalytic degradation activity with 87.27% removal of MB under 180 min visible light irradiation， and exhibited satisfactory cyclic utilization with slight attenuation after 5 cycles.

[Abstract] [PDF]

Comparative Study on Beating Characteristics and Paper Properties of Kraft Bamboo Pulp and Wood Pulps

ZHU Zongwei,LI Bingyun,LI Hailong

2022,(6):43-50.DOI:10.11980/j.issn.0254-508X.2022.06.007

Kraft bamboo pulp was used as the research object in this study， the contents of each fraction of bamboo pulp were determined after classification， and the beating characteristics and paper properties of bamboo pulp before and after sieving out the fine components were studied and compared with bleached kraft softwood pulp and bleached kraft hardwood pulp （wood pulps）. The results showed that the content of long fiber fractions and fine fraction in bamboo pulp was higher， of which the content of R16 and P200 were 50.8% and 25.1%， respectively. During the PFI beating， bamboo pulp fibers were more likely to be cut and kinked than wood pulp fibers at the same beating revolutions. The fine components in bamboo pulp could be beneficial to the reduction of pulp freeness and the improvement of pulp water retention value， reducing the energy consumption of beating. Under the same freeness， the tensile index and tearing index of bamboo pulp and bamboo pulp after sieving out the fine components were greater than that of wood pulps. The burst resistance index of bamboo pulp and the folding endurance of bamboo pulp sieving out the fine components were greater than that of wood pulps.

[Abstract] [PDF]

Establishment of Absorption Capacity Evaluation Method for Watercolor Paper

SHI Liming,LI Zheng,WAN Ying,DU Qi,LIU Wen,YANG Yang,MAO Zongjiu

2022,(6):51-56.DOI:10.11980/j.issn.0254-508X.2022.06.008

In this study， 7 different absorption detection methods were used to detect and analyzed 6 samples of watercolor paper with different absorption capacity， and a set of detection methods suitable for determining the absorption capacity of watercolor paper were established. The results showed that all of ink line method， liquid penetration method， surface absorbance and Hercules sizing tester were not suitable for testing the absorption capacity of watercolor paper. The absorption capacity of watercolor paper could be evaluated synthetically by Cobb method， contact angle method and dynamic permeability method. When the Cobb （60） value of paper was in the range of （20±4）g/m2， the contact angle should change little within 30 min， and the permeability rate expressed by dynamic permeability curve of 1200 s should be fast.

[Abstract] [PDF]

Study on Sensory Function of Cigar-flavored Cigarette Paper in Cigarette

XIANG Pan,HU Shaodong,LI Chenggang,HE Baojiang,LI Hongtao,JI Lingbo,QU Zhan,FU Yufeng,XU Xiujuan

2022,(6):57-63.DOI:10.11980/j.issn.0254-508X.2022.06.009

Three cigar flavors （1#， 2#， 3#） were selected to prepare cigar-flavored cigarette papers and applied to cigar-type cigarettes for sensory evaluation. The results showed that compared with blank cigarettes， the cigarette paper prepared with 3# flavor could enrich the smell of cigar-type cigarettes， significantly improve the sensory quality of smoking， and enhance the cigar-style. Furthermore， the volatile components in flavored cigarette paper prepared by 3# flavor were analyzed by solvent extraction combined with gas chromatography-mass spectrometry （GC-MS）. The results showed that the optimum conditions for solvent extraction were that water as the solvent， extraction temperature of 40℃， extraction time of 2 h. A total of 50 volatile components were identified by GC-MS， including nicotine （114.61 μg/g）， ethyl vanillin （82.7 μg/g）， vanillin （73.78 μg/g）， benzyl alcohol （52.69 μg/g）， ethyl maltol （48.44 μg/g）， 6-methylcoumarin （26.38 μg/g） and other compounds were higher in content.

[Abstract] [PDF]

Multi-component Analysis of Eucalyptus Chemi-mechanical Pulping Wastewater

HUANG Zaiheng,QIN Xiang,LIU Xi,ZHU Tian,NONG Guangzai,YANG Qifeng

2022,(6):64-70.DOI:10.11980/j.issn.0254-508X.2022.06.010

The components of eucalyptus chemi-mechanical pulping wastewater were systematically determined by GC/MS， HPLC/MS and other methods with qualitative and quantitative analysis. The results showed that eucalyptus chemi-mechanical pulping wastewater contained a large amount of lignin， hemicellulose， organic matter， sugar， etc. The high content of lignin reached 73 g/L， which was 1.2 times that of poplars chemi-mechanical pulping wastewater. Moreover， the types of organic pollutants were more than 40. A variety of sugar was also detected in the eucalyptus chemi-mechanical pulping wastewater， which was the basic condition for subsequent anaerobic treatment.

[Abstract] [PDF]

Study on Automatic Control of Green Liquor High-efficiency Clarifier System

YOU Bingjun,YAO Xiuqi,MENG Lingqi,LI Jinpeng,CHEN Anjiang

2022,(6):71-74.DOI:10.11980/j.issn.0254-508X.2022.06.011

The working principle， process and equipment composition of green liquor high-efficiency clarifier were introduced. The control points and safety interlocking conditions， control circuit settings were mainly described. The control system was completely automated， with stable and reliable running after using in production.

[Abstract] [PDF]

Design and Analysis of Key Elements in Hydraulic System of Shoe Press

LI Ruobing,JIA Xiaolong,CHENG Min,WEI Ailing,ZONG Weiya

2022,(6):75-79.DOI:10.11980/j.issn.0254-508X.2022.06.012

The key elements of the shoe press hydraulic system， such as the process requirements of shoe press high line pressure， the hydro-static bearing of the shoe press to the roller， the shoe plate and bearing lubrication， the blanket tension， the oil tank， etc. were designed and analyzed in detail. The internal oil return pipe and the main oil return pipe of the shoe roller were separated by a siphon， which could maintain the tension and expansion of the shoe cover， improve the life of the blanket， meet the technological requirements of the shoe pressure， and solve the problem of dissolving excess saturated air in the hydraulic oil.

[Abstract] [PDF]

Development Status and Trend Analysis of Molded Fiber Products Industry

2022,(6):80-88.DOI:10.11980/j.issn.0254-508X.2022.06.013

The development history， main products categories of molded fiber products were introduced. The policies of plastic restriction/prohibition at home and abroad were summarized. The development status and trend， major manufactures at home and abroad， as well as scientific and technological innovation of molded fiber products industry were analyzed. Finally， the development suggestions of molded fiber products industry were put forward.

[Abstract] [PDF]

Factors Affecting the Absorption Performance of Tissue Paper

ZHANG Zhipeng,DONG Kuibin,LI Chenxi,AN Xingye,CAO Haibing,LU Bin,LIU Hongbin

2022,(6):89-94.DOI:10.11980/j.issn.0254-508X.2022.06.014

The importance of absorptio, n performance of tissue paper was introduced in this paper， and the effects of fiber， beating， creping， drying， embossing and structure on absorption performance of tissue paper were expounded.

[Abstract] [PDF]

Research Progress of Colorimetric Sensors Based on Cellulose Nanocrystal

LIN Tao,WANG Le,WEI Xiaoyao,DU Hengli,YIN Xuefeng

2022,(6):95-102.DOI:10.11980/j.issn.0254-508X.2022.06.015

Colorimetric sensor based on cellulose nanocrystal （CNC） could sense the change of external environment through chromaticity. The combination of its chiral structure and swelling behavior could quickly respond to the stimulation of various external environment. The color change of CNC-based colorimetric sensors under external stimulation of humidity， pressure， gas and organic solvent were summarized in this paper， looking forward to its future development prospects and preparation key points.

[Abstract] [PDF]

Study on Removal of Stickies in Waste Paper Recycling Wastewater

ZHANG Jiaming,ZHOU Chenxu,XIONG Jianhua,ZHU Hongxiang,WANG Shuangfei,HUANG Xiannan

2022,(6):103-112.DOI:10.11980/j.issn.0254-508X.2022.06.016

In the pulp and paper-making process of waste paper reuse， the effect of stickiesis on the quality of recycled paper and the normal operation of paper machines is an important factor. The research progress on the sources， detection methods and removal methods of sticky substances in waste paper recycling were introduced in this paper.The research progress of its removal methods in physics， chemistry， advanced oxidation， biology and combination technology was emphatically expounded.The main problems and future development directions of sticky removal technology in the field of waste paper recycling and wastewater treatment were discussed.

[Abstract] [PDF]

Study on Clean Production Technology in High-yield Semi-chemical Pulping with Woodchip Rejects

ZHANG Wei,XU Jun,YING Guangdong,CAO Yanjun,CHEN Kefu,ZANG Zijia

2022,(6):113-118.DOI:10.11980/j.issn.0254-508X.2022.06.017

Taking the woodchip rejects filled from the chip screening systems of a papermaking mill as the raw material， the lab-scale process and industrial process of caustic soda semi-chemical pulping were studied. The results showed that pulp with a high yield and ring crush strength was obtained via semi-chemical pulping from woodchip rejects， of which the properties were significantly affected by the alkaline dosage. The breaking length and ring crush index of the pulp pretreated with 14% NaOH followed by two-stage high-consistency refining process with paper concentration of 22% could reach 2.89 km and 9.76 N·m/g， respectively， which was 1.9 times and 1.2 times higher than that of the paper pretreated with 8% NaOH， and also better than the OCC paper used in the domestic mill at present. Furtherly， the indicators of the paper obtained in the industrial process were consistent with the laboratory. The tightness and ring crush strength of the prepared paper reached AA grade and A grade of corrugation medium in GB/T 13023—2008.

[Abstract] [PDF]

Study on Integration and Practice of Production-teaching-research of Pulp and Papermaking Professional English

CHEN Gegu,YAO Chunli,LI Mingfei,PENG Feng

2022,(6):119-123.DOI:10.11980/j.issn.0254-508X.2022.06.018

A teaching model of pulp and papermaking professional English which integrated production-teaching-research was proposed in this paper. Based on the analysis towards problems of the pulp and papermaking professional English teaching， CBI concept and task-based teaching method were used to combine research， production and teaching effectively. From the perspective of the integration of production-teaching-research， the teaching content， teaching model， and teachers were put forward and practiced. In addition， the section of “Professional basic English and Comprehensive practice” was set up to enrich the teaching content， improving the professional English language skill and creativity of students， achieving the teaching effect that teaching benefited teachers as well as students in the process， offering the new basis and reference for the educational reform of pulp and papermaking professional English.

[Abstract] [PDF]